The 388 and 392 we're both leaked by sixunited on a slide, the 392 is basically just a 390 with the 8060s iGPU and the 388 is basically just a 385 with the 8060s GPU. The benchmark on passmark is further proof that both chips are probably being announced at CES next year.
It may help AMD keep up with an unreleased, unknown N1X. It may also shat on it from a great height. Keep the silly commentary to yourself since we have no details at all of the performance. It's already going to be a year late.